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Binary Gas Analyzer for Hydrogen Monitoring - Michell XTC601

Updated:2025-03-13

Brand: PST/Michell
Model: XTC601
Description: A robust, linear and stable thermal conductivity analyzer for measurement of binary gas mixes such as air in hydrogen, nitrogen, argon, helium or carbon-dioxide. The sensor is housed in a rugged casin
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Product Details

Binary Gas Analyzer for Hydrogen Monitoring - Michell XTC601 Description：

User's Manual Datasheet

Thermal Conductivity Technology in Safe or Hazardous Areas

Features

Suitable for use in ATEX, UKCA, IECEx, TR CU Ex & cQPSus certified Hazardous Areas

Optional status LEDs following NAMUR standard

Compact and rugged design with an EExd enclosure and 4...20 mA output

Touch-screen display allows calibration or adjustment without the need for a hot works permit

Accuracy of better than ±2 % full scale

IP66 rated enclosure

Low cost of ownership due to minimal maintenance

Typical ranges available: 0...5 % up to 0...100 % (others gas dependent)

Stability ±0.5 % per month (of range)

A robust, linear and stable thermal conductivity analyzer for measurement of binary gas mixes such as air in hydrogen, nitrogen, argon, helium or carbon-dioxide. The sensor is housed in a rugged casing, making it suitable for a wide range of applications. The analyzer can be supplied explosion-proof and suitable for hazardous areas.

Specifications

Performance
Measurement Technology	Thermal Conductivity sensor
Measured Gases	Air, Ar, CH₄, CO₂, H₂, He or N₂
Gas Requirements	Non-condensing sample with particles <3μm
Measurement Range	Selectable from 0...5 up to 0...100 % 50...100 % up to 90...100 %
Measurement Range (H₂ & He)	Selectable from 0...1 % up to 0...100 % 50...100 % up to 99...100 %*
Display Resolution	0.1 %
Display Type	Backlit LCD
Intrinsic Error (Accuracy)	< ±2 % of range**
Response Time (T90)	Standard < 20 seconds**
Repeatability	±0.2 % of range
Linearity	±1 % range
Zero Stability	±0.5 % of range per month
Range Stability	±0.5 % of range per month
Sample Flow Rate	100...500 ml/min (0.2...1.27 scfh)
Sample Flow Rate(Ex)	270...330 ml/min (0.54...0.66 scfh))
Sample Flow Effect (calibrated at 300 ml/min)	< 1 % of range for flows: 100...500 ml/min
Sample Pressure	Analyzers are callibrated at atmospheric pressure and must be operated with an atmospheric vent, unless otherwise stated
Maximum Safe Pressure	4 barg (58 psig)
Sample Temperature	A constant temperature of +5...+45/+55 °C (+41...+113/+131 °F)
Sample Cell Temperature	+50/+60 °C (+122/+140 °F)
Electrical Specifications
Analog Inputs	2 off 4...20 mA inputs One for an external sensor that can be displayed on the screen One to act as an active compensation for the process conditions
Analog Outputs	2 off 4...20 mA outputs
Output Ranges	Primary range is set to the calibrated range of the instrument The second is user selectable
Alarms	2 off single pole changeover (SPCO) relays (250 V, 5 A max)
Datalogging	The user can use the digital communications to log the output from the analyzer The unit will store 40 alarm points and the min/max O₂ concentrations with date and time stamp
Digital Communications	Modbus RTU over RS485
Power Supply	24 V DC; 1.0 A max
Operating Conditions
Ambient Temperature	+5...+60 °C (+41 °F...+140 °F) +5...+50 °C (+41...+122 °F) cQPSus
Mechanical Specifications
Warm Up Time	< 25 minutes
Stabilization Time	5 minutes
Dimensions	234 x 234 x 172 mm (w x d x h)
Weight	9.7 kg
Wetted Materials	316 stainless steel, boroscillicate glass, platinum, (plus O-ring)
O-Ring Materials	Viton, Silicone or Ekraz
Gas Connection	1/4" NPT female (GP 1), 1/8" NPT female (Ex & GP2)
Ingress Protection	IP66, NEMA 4
Hazardous Area Classification
ATEX/UKCA	II 2 G D Ex db IIB +H2 T6 Gb Ex tb IIIC T85 °C Db IP66
IECEx	Ex db IIB +H2 T6 Gb Ex tb IIIC T85°C Db IP66
Temperature ranges for ATEX/UKCA and IECEx as per O-ring type	Silicon: Ta = -40 °C...+60 °C (+50 °C for N. America, +55 °C for TR CU Ex (EAC)) Viton: Ta = -15 °C...+60 °C (+50 °C for N. America, +55 °C for TR CU Ex (EAC)) Ekraz: Ta = -10 °C...+60 °C (+50 °C for N. America, +55 °C for TR CU Ex (EAC))
cQPSus	Class I, Division 1, Groups B,C,D T6 Class I, Zone 1 AEx db IIB+H2 T6 Gb / Ex db IIB+H2 T6 Gb
TR CU Ex	1Ex d IIB+H2 T6 Gb
Ranges 98-100 % and 99-100 % (for H₂ and HE only) will require a flowing reference and selection of the 4-port model. reference and selection of the 4-port model. The typical intrinsic error and response time will be as above. Certain gas combinations and/or ranges may have different specifications. Please consult Michell Instruments for specific cases. For example, CO₂ / N₂ would be < 50 seconds for T90. Note:* If the 4-port version is selected then a reference gas with a flow rate of 300 ml/min is required